国产中温固化热破胶膜性能
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北京卫星制造厂有限公司,北京 100094

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TQ4363

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Properties of Domestic Moderate Temperature Curing Hot-break Adhesive Film
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Beijing Spacecrafts Manufacturing Co., Ltd,Beijing 100094

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    摘要:

    考察了一种适用于卫星太阳翼基板的国产中温固化胶膜的胶接性能和热破工艺性,并分别采用国产和进口胶膜,利用胶膜热破施胶方法制备了碳纤维网格面板/铝蜂窝芯夹层结构,对其弯曲性能进行评价。结果表明,国产胶膜的室温拉伸剪切强度(铝基材)为34.9 MPa,150 ℃时拉伸剪切强度降为10.2 MPa,-150 ℃时拉伸剪切强度降为30.4 MPa。碳纤维复合材料作为胶接基材时,室温拉伸剪切强度为17.5 MPa,破坏模式为基材分层破坏和胶黏剂内聚破坏的混合破坏模式。国产胶膜具有良好的热破工艺特性,在合适的工艺条件下,破孔率优于99.9%,90°板-芯剥离强度为15.4 N/cm;采用国产胶膜制备的蜂窝夹层结构的弯曲性能与采用进口Redux312UL的接近,弯曲刚度为1.94×108 N·mm²,弯曲强度为35.7 MPa。

    Abstract:

    The bonding and hot-break properties of a domestic adhesive film for satellite solar wing substrate were investigated, and the carbon fiber grid panel/aluminum honeycomb sandwich structures were prepared by hot-break gluing using domestic and imported adhesive films, and the bending properties were evaluated. The results show that the tensile shear strengths of the domestic adhesive film at room temperature is 34.9 MPa,it reduce to 10.2 MPa at 150 ℃ and 30.4 MPa at -150 ℃. The tensile shear strength of CFRP substrate is 17.5 MPa at room temperature, and the mixed failure mode is the CFRP substrate delamiation failure and adhesive cohesion failure. The adhesive film has excellent hot-break process characteristics, the blow hole rate is better than 99.9%, the 90° peel strength of aluminum honeycomb-sandwich structure is 15.4 N/cm.Bending properties of the domestic and imported Redux312UL honeycomb sandwich structure is equivalent. Bending stiffness of honeycomb sandwich structure is 1.94×108 N·mm², and bending strength is 35.7 MPa.

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赵臻璐,严利娟,刘佳,张鑫,梁凯.国产中温固化热破胶膜性能[J].宇航材料工艺,2023,53(2):98-101.

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  • 收稿日期:2022-05-31
  • 最后修改日期:2023-03-17
  • 录用日期:2022-11-07
  • 在线发布日期: 2023-04-26
  • 出版日期: 2023-04-30
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